Sökning: "DOC degradation"

Visar resultat 1 - 5 av 14 uppsatser innehållade orden DOC degradation.

  1. 1. Fexofenadins påverkan på löslighet av organiskt budnet kol och kväve i humus

    Magister-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Viveka Törnqvist; [2021]
    Nyckelord :fexofenadine; humus; dissolved organic carbon; dissolved organic nitrogen;

    Sammanfattning : Antihistamines are a group of pharmaceuticals that enter the environment and may affect microorganisms that regulate decomposing of organic matter and the release of carbon and nitrogen from soils. In this study I investigated if the antihistamine fexofenadine decreases the concentration of dissolved organic carbon (DOC) and dissolved organic nitrogen (DON) from humus. LÄS MER

  3. 2. Spruce Forests and Peat Wetlands in Lake Bolmen’s Catchment Both Leak and Degrade Coloured Dissolved Organic Carbon

    Magister-uppsats, Högskolan i Halmstad/Akademin för företagande, innovation och hållbarhet

    Författare :Jasmin Borgert; [2021]
    Nyckelord :Brownification; land use; DOC; iron; water colour;

    Sammanfattning : Lake browning in the northern hemisphere is endangering crucial ecosystem services. Darker water decreases fish and primary production as well as touristic and recreational values. It furthermore requires intensive treatment to receive safe drinking water. Brownification is connected to iron and coloured dissolved organic carbon (DOC). LÄS MER

  4. 3. Fexofenadins påverkan på löslighet av organiskt budnet kol och kväve i humus

    Magister-uppsats,

    Författare :Viveka Törnqvist; [2021]
    Nyckelord :fexofenadine; humus; dissolved organic carbon; dissolved organic nitrogen;

    Sammanfattning : Antihistamines are a group of pharmaceuticals that enter the environment and may affect microorganisms that regulate decomposing of organic matter and the release of carbon and nitrogen from soils. In this study I investigated if the antihistamine fexofenadine decreases the concentration of dissolved organic carbon (DOC) and dissolved organic nitrogen (DON) from humus. LÄS MER

  5. 4. Traits of peat- and upland-derived stream dissolved organic carbon in the permafrost region around Abisko, northern Sweden

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Nora Kainz; [2021]
    Nyckelord :physical geography; ecosystem analysis; permafrost degradation; DOC; DOC concentration; stable isotope carbon signature; DOC quality; DOC degradation; Atmospheric Sciences and Biogeochemical Cycles; Earth and Environmental Sciences;

    Sammanfattning : Climate change-induced thawing of permafrost mobilizes previously frozen carbon of high potential reactivity, thereby, fuelling microbiological production of greenhouse gases. For this work, an analysis of the quantity, quality, and bioreactivity of DOC in streams from the Stordalen discontinuous permafrost catchment was carried out with stream water samples during the relatively warm summer of 2018. LÄS MER

  7. 5. Markytesänkning, växthusgasavgång och utlakning från dikad torvjord

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Martin Ahlvin; Sofia Alexandersson Ros; [2020]
    Nyckelord :Dikad torvmark; höjdmätning; markytesänkning; koppargödsling; växthusgaser;

    Sammanfattning : Greenhouse gas emissions and land subsidence on four cultivated peat soils (Martebo, Örke, Kälkestad, Lidhult) have been investigated by measuring emissions of carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) in field and lab. Greenhouse emitted gas (mg/h) from undisturbed soil cores was measured in lab. LÄS MER